I've decided to bite the bullet and order an Asus A8V-E Deluxe motherboard. It seems to fit the bill for my needs very well: under £100, WiFi built in, 2 x SATA (a bit limited if you've got more than 2 SATA drives but it has IDE as well), PCI-E and reasonable onboard sound. The chipset is the VIA K8T890, not as well reviewed as the nForce 4 chipsets.
Does anyone have any views or experiences of this motherboard or seen any reviews on it? I thought long and hard about going for an nForce 4 motherboard but could not justify the extra features you get (SATA 2, hardware firewall, SLi, etc.), as I probably would not end up using them anyway.
It 'only' has 8 USB 2.0 ports (as opposed to 10 for the nForce 4), only 2 SATA ports (many nForce 4 have an extra SATA controller providing a total of 4), but it does come with 3 PCI slots available which is quite useful I suppose.